Tested on a trash (grey con) mob in MPG.
Sitting, with my warrior's back to the mob (=max hit) the thrasher hit for 583.
Popping this buff, same conditions, hit was 496.
583 X 15% = 87
583-496 = 87.
QED
Very nice clicky, considering it's castable every 5 minutes and lasts 40 secs.
Also stacks with Last Stand... worth testing if it reduces any hits by 15%...
Results of test:
Fighting a LB snake in The Grounds:
max hit on sitting warrior: 4474
max hit with Last Stand running on sitting warrior: 3169 (30% reduction)
max hit with both Last Stand and Guardians Bravery running: 2694 (40% reduction) (The 15% is taken off the REDUCED hit due to Last Stand so the total effect is 40% instead of 45%).
max hit with just Guardians Bravery (clicked off Last Stand): 3803 (15% reduction)
So this clicky buff stacks with warrior defensive AA AND its mitigation stacks.
N I C E !!!
Edited, Aug 5th 2014 9:44am by Sippin